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Post by tubelightonline on Sept 10, 2014 19:09:14 GMT
How were the marker headlights (when they existed) on trains set? I know that the Q23 car in the Museum has externally-mounted hinged covers that can be used to conceal or display the various marker aspect optics, but this feature was not present on later builds (Tube or Surface), as far as I am aware. Did the same setup exist for these other stocks (but with the covers mounted internally instead), or were the individual optics switched separately from within the cab, and if so, was it obvious as to which switch was which (there's a tongue twister if ever I saw one)?
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rincew1nd
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Post by rincew1nd on Sept 10, 2014 20:07:40 GMT
Hmmm, I'm reminded of the headcode discs on the early diesels on the mainline. They were hinged across the centre so could be folded down to match body colour (and obscure the lamp) and clipped up and show a white disc (the lower semi-circle had an aperture for the light to shine though).
The simplist in me thinks that there would have been one switch for each lamp, but I'd like the think that there was a rotary switch that could just be turned to the appropriate code.
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metman
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Post by metman on Sept 10, 2014 20:20:10 GMT
I think they were permanently lit and were blanked off internally.
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Post by Dstock7080 on Sept 10, 2014 21:14:32 GMT
1938 Tube Stock, O, P, Q38 Stock had permanently lit bulbs with internal sliders to cover the aspects.
1956 Tube Stock, R Stock had individual switched bulbs behind each aperture.
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Post by tubelightonline on Sept 11, 2014 19:35:41 GMT
Thanks for all of the responses - I can't help thinking that the slider-based system was somewhat wasteful, given that some of the aspects could potentially be illuminated for long periods but not actually be visible...still, I suppose they would have acted as a secondary means of cab heating in the winter months!
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